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High Resolution Grating Spectroscopy of GRB 020405 with CHANDRA LETGS
N. Mirabal, F. Paerels, J. P. Halpern
We present high-resolution X-ray spectroscopy of GRB 020405 obtained with the Low Energy Transmission Grating Spectrometer (LETGS) on board the Chandra X-ray Observatory starting 1…
Time-Dependent Optical Spectroscopy of GRB 010222: Clues to the GRB Environment
N. Mirabal, J. P. Halpern, S. R. Kulkarni +9
We present sequential optical spectra of the afterglow of GRB 010222 obtained one day apart using the Low Resolution Imaging Spectrometer (LRIS) and the Echellette Spectrograph and…
Multiwavelength Searches of Unidentified EGRET Sources
N. Mirabal, J. Halpern, R. Mukherjee +2
3EG J1835+5918 is the brightest of the so-called unidentified EGRET sources at intermediate galactic latitude (l,b)=(89,25). We obtained complete radio, optical, and X-ray coverage…
The 2001 Superoutburst of WZ Sagittae
J. Patterson, G. Masi, M. Richmond +25
We report the results of a worldwide campaign to observe WZ Sagittae during its 2001 superoutburst. After a 23-year slumber at V=15.5, the star rose within 2 days to a peak brightn…